Commit Graph

1938 Commits

Author SHA1 Message Date
Johnny Chen 2a7e05a3d7 Fix a bug in EmulateTB() (TBB, TBH) where the branch length should be "twice"
the value of the byte/halfword returned from the table.

llvm-svn: 125793
2011-02-17 23:27:44 +00:00
Caroline Tice 16443905f3 Add header declarations for the remaining instructions we need to
emulate, to cover those that can change the PC.

llvm-svn: 125791
2011-02-17 23:09:13 +00:00
Johnny Chen 34dd9ba9c7 Refactoring. Abstracted the set flags operation into its own helper method
WriteFlags() and renamed WriteCoreRegisterWithFlags() to WriteCoreRegOptionalFlags().
Modified the call sites to use the helper methods.

llvm-svn: 125788
2011-02-17 22:37:12 +00:00
Johnny Chen fc5c19dec5 A8.6.6 ADD (register)
Renamed EmulateAddRdnRm() to EmulateAddReg(), and added Encoding T1 to it.
Where Encoding T2 can potentially modify the PC, causing a brnach.

llvm-svn: 125782
2011-02-17 22:03:29 +00:00
Johnny Chen 2789706059 Add EmulateTB() method to emulate "Table Branch Byte" and "Table Branch Halfword"
operations for Thumb2.

llvm-svn: 125767
2011-02-17 19:34:27 +00:00
Caroline Tice 032d2dd576 Add stubs for pseudocode functions "MemA[]" amd "MemU[]", corresponding to aligned
and unaligned memory accesses.  The new stub functions are MemARead, MemAWrite,
MemURead, and MemUWrite.  At the moment these stubs just call ReadMemoryUnsigned or
WriteMemoryUnsigned, but we can fill them out further later if we decide we need
more accurate emulation of the memory system.

Replaced all the direct calls to ReadMemoryUnsigned and WriteMemoryUnsigned in
EmulateInstructionARM.cpp with calls to the appropriate new stub function.

llvm-svn: 125766
2011-02-17 19:20:40 +00:00
Johnny Chen 0f60574fd7 Move Align(val, alignment) utility function to ARMUtils.h.
llvm-svn: 125753
2011-02-17 17:31:08 +00:00
Greg Clayton 4796c4feb1 Modified version of Marco Minutoli's host arch patch.
llvm-svn: 125706
2011-02-17 02:05:38 +00:00
Johnny Chen e19e4fc8dc Add comment for the helper method WriteCoreRegisterWithFlags().
llvm-svn: 125703
2011-02-17 01:49:00 +00:00
Johnny Chen 0c64b5bbb6 Refactoring. Wrap the following pseudocode from the ARM Architecture Reference Manul:
// if d == 15 then         // Can only occur for encoding A1
//     ALUWritePC(result); // setflags is always FALSE here
// else
//     R[d] = result;
//     if setflags then
//         APSR.N = result<31>;
//         APSR.Z = IsZeroBit(result);
//         APSR.C = carry;
//         // APSR.V unchanged

into a helper method WriteCoreRegisterWithFlags, and modified the existing methods
to take advantage of it.

Plus add two emulation methods (declaration only for now) for ORR (immediate) and ORR (register).

llvm-svn: 125701
2011-02-17 01:35:27 +00:00
Stephen Wilson bc15eb1736 Do not use constants from stdint.h that we cannot portably provide on all platforms.
llvm-svn: 125695
2011-02-17 00:01:47 +00:00
Greg Clayton f4ecaa576c Clean up a bit of the type getting code where lldb_private:Type now has
clang_type_t
    GetClangFullType(); // Get a completely defined clang type

    clang_type_t
    GetClangLayoutType(); // Get a clang type that can be used for type layout
    
    clang_type_t
    GetClangForwardType(); // A type that can be completed if needed, but is more efficient.
    

llvm-svn: 125691
2011-02-16 23:00:21 +00:00
Johnny Chen 4890c85e0a Add emulation methods for ROR (immediate), ROR (register), and RRX.
Turns out that they can be funneled through the helper methods
EmulateShiftImm()/ EmulateShiftReg() as well.

Modify EmulateShiftImm() to handle SRType_ROR and SRType_RRX.
And fix a typo in the impl of utility Shift_C() in ARMUtils.h.

llvm-svn: 125689
2011-02-16 22:14:44 +00:00
Caroline Tice eaf2e4fdf1 Add code to emulate STRB (Thumb) instruction.
llvm-svn: 125686
2011-02-16 20:22:22 +00:00
Johnny Chen 14571f4b67 Add encoding entries for LSL (immediate and register) and LSR (immediate and register) to
ARM and Thumb opcode tables.

llvm-svn: 125683
2011-02-16 19:27:43 +00:00
Johnny Chen f8cd4889ec Fix clang++ warning building the executable for testing.
llvm-svn: 125682
2011-02-16 19:22:52 +00:00
Johnny Chen 4b22e7e67a Add tagging for EmulateLDRRtRnImm().
llvm-svn: 125671
2011-02-16 18:35:47 +00:00
Jim Ingham d0a3e12b05 Destroy the dynamic loader plugin in Process::Finalize. If you wait till the auto_ptr gets deleted in the normal course of things the real process class will have been destroyed already, and it's hard to shut down the dynamic loader without accessing some process pure virtual method.
llvm-svn: 125668
2011-02-16 17:54:55 +00:00
Stephen Wilson 7a86fcdd8f Make declaration of DynamicLoaderLinuxDYLD::CreateInstance match its definition.
llvm-svn: 125656
2011-02-16 05:38:31 +00:00
Stephen Wilson dd9ec590c6 Expose includes for the socket layer on all platforms.
This patch reverts a portion of r125199 to allow the tree to build again on
linux.  The specific mingw issues that revision intended to address can be
sorted out at a later time.

llvm-svn: 125655
2011-02-16 05:36:26 +00:00
Stephen Wilson de049291fd linux: Set ArchSpec m_type correctly from object file.
An ArchSpec's type defaults to MachO.  Ensure the type is properly set
on ELF systems.

llvm-svn: 125654
2011-02-16 05:25:13 +00:00
Stephen Wilson d879a4d12a Use SIZE_MAX instead of SIZE_T_MAX for portability.
llvm-svn: 125653
2011-02-16 05:24:31 +00:00
Greg Clayton 93d3c8339c The DynamicLoader plug-in instance now lives up in lldb_private::Process where
it should live and the lldb_private::Process takes care of managing the 
auto pointer to the dynamic loader instance.

Also, now that the ArchSpec contains the target triple, we are able to 
correctly set the Target architecture in DidLaunch/DidAttach in the subclasses,
and then the lldb_private::Process will find the dynamic loader plug-in 
by letting the dynamic loader plug-ins inspect the arch/triple in the target.

So now the ProcessGDBRemote plug-in is another step closer to be purely 
process/platform agnostic.

I updated the ProcessMacOSX and the ProcessLinux plug-ins accordingly.

llvm-svn: 125650
2011-02-16 04:46:07 +00:00
Johnny Chen 0f03baa539 Minor comment change.
llvm-svn: 125634
2011-02-16 01:31:20 +00:00
Johnny Chen 22deaa5a1a Add emulation methods for LSL (immediate), LSL (register), LSR (immediate), and LSR (register).
Create two helper methods EmulateShiftImm() and EmulateShiftReg() and have ASR, LSL, and LSR
delegate to the helper methods which take an extra ARM_ShifterType parameter.

The opcodes tables have not been updated yet to reflect these new entries.

llvm-svn: 125633
2011-02-16 01:27:54 +00:00
Caroline Tice 5b5396ba77 Add documentation tags for LDM/STM instruction families.
Add code to emulate STR (register) Arm instruction.

llvm-svn: 125623
2011-02-16 00:33:43 +00:00
Johnny Chen a79703db79 Section heading for EmulateB().
llvm-svn: 125620
2011-02-16 00:17:18 +00:00
Johnny Chen 7484e4e337 Add section headings corresponding to some of the ARM/Thumb emulation methods for better documentation.
llvm-svn: 125618
2011-02-16 00:06:18 +00:00
Greg Clayton bdda58377f Fixed an issue where detection of vCont support wasn't being done correctly.
Fixed how the LLDBDisassembler computes and uses a target triple.

llvm-svn: 125617
2011-02-16 00:00:43 +00:00
Johnny Chen 531dbfa5d8 A8.6.14 ASR (register)
Add EmulateASRReg() Encodings T1, T2, and A1 to the opcodes tables.

llvm-svn: 125614
2011-02-15 23:22:46 +00:00
Caroline Tice f199eea579 Add eContextRegisterLoad instruction emulation context.
Add code to emulate STR (Immediate, Thumb) instruction.

llvm-svn: 125610
2011-02-15 22:53:54 +00:00
Johnny Chen f35024b087 Modify the various shift routines to handle cases where the shift amount comes
from the bottom byte of a register.

llvm-svn: 125606
2011-02-15 22:21:33 +00:00
Greg Clayton b841ff5da5 Removed my specific binaires from the xcscheme.
llvm-svn: 125603
2011-02-15 22:00:20 +00:00
Greg Clayton 514487e806 Made lldb_private::ArchSpec contain much more than just an architecture. It
now, in addition to cpu type/subtype and architecture flavor, contains:
- byte order (big endian, little endian)
- address size in bytes
- llvm::Triple for true target triple support and for more powerful plug-in
  selection.

llvm-svn: 125602
2011-02-15 21:59:32 +00:00
Johnny Chen f976896b83 Remove the "Register &reg" parameter from the BXWritePC(), LoadWritePC(), and ALUWritePC()
methods of EmulateInstructionARM class.  The context data structure should provide sufficient
information already.

llvm-svn: 125596
2011-02-15 21:08:58 +00:00
Johnny Chen 6f93f63955 Fix wrong mask and encoding for T2 of ASR (immediate).
llvm-svn: 125593
2011-02-15 20:14:02 +00:00
Johnny Chen a4afff97ad A8.6.14 ASR (immediate)
Add EmulateASRImm() Encodings T1, T2, and A1 to the opcodes tables.

llvm-svn: 125592
2011-02-15 20:10:55 +00:00
Johnny Chen ffb3b51ba8 Refactored the test driver to abstract out the Python sys.path specification for
different build configurations.

llvm-svn: 125584
2011-02-15 18:50:19 +00:00
Caroline Tice 6e12e117d4 Add code to emulate STMIB Arm instruction.
llvm-svn: 125580
2011-02-15 18:42:15 +00:00
Caroline Tice 5e38f35fe3 Add code to emulate STMDB Arm instruction.
Add some bit-mask fixes to code for getting register bits for various LDM and STM instructions.

llvm-svn: 125578
2011-02-15 18:10:01 +00:00
Johnny Chen 7a03c852d0 Add a bunch of utilities and an enum (ARM_ShifterType) for shift and rotate operations pertaining to:
o A2.2.1 Pseudocode details of shift and rotate operations
o A8.4.3 Pseudocode details of instruction-specified shifts and rotates

llvm-svn: 125575
2011-02-15 17:52:22 +00:00
Johnny Chen ef55e4c174 Remove the unnecessary assignment of m_inst_cpsr inside EvaluateInstruction(),
because it's already been done within ReadInstruction().

llvm-svn: 125569
2011-02-15 17:31:33 +00:00
Caroline Tice efb309619a Add code to emulate the STMDA Arm instruction.
llvm-svn: 125542
2011-02-15 00:19:42 +00:00
Greg Clayton e576ab2996 All UnwindPlan objects are now passed around as shared pointers.
ArchDefaultUnwindPlan plug-in interfaces are now cached per architecture 
instead of being leaked for every frame.

Split the ArchDefaultUnwindPlan_x86 into ArchDefaultUnwindPlan_x86_64 and
ArchDefaultUnwindPlan_i386 interfaces.

There were sporadic crashes that were due to something leaking or being 
destroyed when doing stack crawls. This patch should clear up these issues.

llvm-svn: 125541
2011-02-15 00:19:15 +00:00
Johnny Chen 557520b996 Add missing logic (if BadReg(d) then UNPREDICTABLE;) for Encoding T2 of EmulateMovRdImm().
llvm-svn: 125533
2011-02-14 23:33:58 +00:00
Johnny Chen 5623dc3559 Fix build warning (unused variable).
llvm-svn: 125531
2011-02-14 23:21:24 +00:00
Caroline Tice eccad4d005 - Rearrange instruction emulation contexts to use a union for the
various types and numbers of arguments rather than trying to keep a
  constant number of arguments for all the types.

- Also create a Register type within the instructions, to hold
  register type and number.

- Modify EmulateInstructionArm.cpp to use the new register and context
  types in all the instruction emulation functions.

- Add code to emulate the STM Arm instruction.

llvm-svn: 125528
2011-02-14 23:03:21 +00:00
Johnny Chen dacc14c995 Updated README file.
llvm-svn: 125527
2011-02-14 22:25:44 +00:00
Johnny Chen c3ba12d8e8 Add entries for EmulateMovRdImm() -- "MOV (immediate)" -- Encodings T1 & T2 into g_thumb_opcodes
table.  Modify EmulateInstructionARM::EvaluateInstruction() so that if the cpsr has changed
during evaluate instruction, we flush out the change into m_inst_cpsr in preparation for the next
instruction.

llvm-svn: 125524
2011-02-14 22:04:25 +00:00
Greg Clayton c2448f6175 Added support for Xcode 4 build directories.
llvm-svn: 125522
2011-02-14 21:17:06 +00:00